What Is a Powder Scale?
A powder scale is a measuring instrument that consists of two components: a storage case in which powders for weighing are kept separately by type, and an electronic balance.
They are usually used to measure powders that are too dangerous for workers to handle with their bare hands, or to increase the accuracy of measurements.
The measurement itself takes the form of feeding the powder to be measured from the storage case to the electronic balance for measurement.
Technological developments are underway to prevent lumps from forming by dispersing and feeding the powder, thereby ensuring highly accurate measurements.
Uses of Powder Scales
Powder scales are used to measure the quantity of powder safely and with high accuracy while maintaining temperature and humidity.
Specific examples of applications include the following:
- Weighing to check the mixing ratio of powders for insulation
- Weighing for mixing in research and development of pharmaceuticals
- Weighing for formulation in agrochemical research and development
In the measurement of powders, it is recommended to measure in a clean room or constant-temperature room environment because flowability is important.
Some powder scales are equipped with a thermostatic environment.
Principle of Powder Scales
It is difficult to detect transparent water because the amount of light attenuation is very small, as well as light transmission. This makes detection even more difficult.
On the other hand, water detection sensors, like photoelectric sensors, consist of sensors on the light emitting and light receiving sides, and are characterized by the use of infrared light of 1.45um (1450nm) as the long wavelength light that is absorbed by water molecules.
By using this long-wavelength light absorbed by water molecules in the water detection sensor, water can be detected stably because the light is absorbed by water molecules and intercepted even by transparent water, colored water, and water with different color densities. Because of this feature of the water detection sensor, when water is used for liquid components such as water droplets, bubbles, and bubbles with small bubbles accumulated, which are prone to malfunction with photoelectric sensors, water can also be detected stably because light is absorbed and blocked by water molecules in the same way.